GlueDart. Glue Pen With Electric Motor Extruder





Introduction: GlueDart. Glue Pen With Electric Motor Extruder

About: Hello! My name is Tetiana. One of my hobbies is 3D printing. My work covers various areas of engineering to the decorative. You can see my models on the sites:

Today, glue guns are widely used in everyday life and in production. They are used by makers and builders, home masters and professionals. Makers of the whole world use glue guns for gluing various surfaces (textiles, paper, plastic, wood, etc.). The glue gun is indispensable in many types of creativity and needlework (quilling, scrapbooking, floristry, decoration, etc.).

I often use the glue gun in my work. And I have wanted to have a glue gun, which will produce a drop of glue and dosage will be easier to use, such as a 3d pen.

I created a model of a glue pen with an electric extruder. I took the heater out of the ordinary glue gun. The body and all the mechanical parts are created in Fusion 360. After that, I printed all the details on the 3d printer.

Step 1: List of Components

3d printing:
Body (2 parts)

Motor part


Button Holder

Stand for glue pen

Electronic and mechanical components:
30RPM Mini DC Metal Gear Motor

Button TACT-34N-F

Charger module LI-CHARGER-MicroUSB

Battery LP302030

8 Screws: Self-tapping screws M3X10

2 Hexagon socket head cap screws M3X16

Step 2: 3d Printing

Print all 3D print components
I attach the STL files

NB! Do not use PLA plastics, as it can deform when heated

Step 3: Electric Parts Assembly

Connect the charger module to the battery
Connect it to the micro-adapter

The capacity of this battery ensures continuous operation for 1 hour

If the glue pen should work for a longer time, it will be better to use a more powerful external battery.

Step 4: Button Holder

Put the button in the holder
Solder the wire length of 10 cm

Glue the button holder to the case at the level of the U-hole

Step 5: Motor Part Assembly

Assemble the motor part
Screw rollers and motor

Fix the motor part to the body with screws

Step 6: Extruder Assembly

Place the charger module with battery
One button wire connect to the motor

The second wire of the button is soldered to the board

The second motor wire is soldered to the board

Press the button and check the direction of the feed roller

Step 7: Final Assembly

Insert the heating part

Collect the body completely with screws

Step 8: Go to Work!

Connect the glue stick to the mains
Wait when warmed up and get to work

I tested a glue gun when assembling a kitchen set - a bowl and a napkin

GlueDart works with 11 mm glue rods

I want to create a glue pen for 7 mm rods and 12-volt power.

Invention Challenge 2017

Runner Up in the
Invention Challenge 2017



    • Oil Contest

      Oil Contest
    • Water Contest

      Water Contest
    • Creative Misuse Contest

      Creative Misuse Contest

    22 Discussions


    10 months ago

    Excellent! I especially like the 3D printed spring for the roller.

    1 reply

    Wow, that's an excellent design for a great idea. I've added this to my project queue. I'll be adding a speed control for the motor to better control the glue dispense amount. I wish I had a 3D printer :(

    Thanks :)

    1 reply

    Thank you! I'm working on a speed regulator now and I'm doing a new 7mm glue gun model.


    11 months ago

    I own a battery-powered Bosch 7mm glue pen, and I was thinking to motorized it. Your great design gave me some ideas. Thanks!

    5 replies

    Thank you! Wait a little. Now I'm doing a 7mm version of the glue pen.

    Great! What base are you using, for the nozzle?

    In the heater, the nozzle is connected to the main body and I use the heater from an ordinary glue gun.

    But are you using a heater from a 7mm hotgun, which have a smaller nozzle?

    Now I'm working on a 7mm version of a glue gun. I want to make temperature and extrusion speed adjustment.

    I'm thinking a reduction drive for the motor would be necessary. I can't imagine a small motor will have much torque... also, the speed wouldn't be needed as much.

    1 reply

    11 months ago

    As your are designing a 7mm version, could you have the body made from 2 parts, to be able to 3D-print the front part with a temperature proof filament, and the rear part with standard PLA?

    I ask this because we recently found a nice filament which can resist up to 110°C and can be extruded at 250°C:

    but it is quite expensive :o/

    1 reply

    I'll think about it. We have a local manufacturer's nylon.

    would it be possible to use some sort of force sensitive button or pot so that you could vary the speed?

    1 reply

    Yes, it is possible. But this will require a more complex electronic part.